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uboot 1280x1024 lvds logo

Question asked by jie jia on May 12, 2016
Latest reply on May 16, 2016 by jie jia

board: imx6q_sabresd;

version: u-boot-2009.08;

patch:0001-Enable-uboot-logo-for-HDMI-LCD-and-LVDS.patch

 

Dear Community,

     i want to show logo on my 1280x1024 lcd panel, it uses lvds split mode in kernel, my kernel  shows normal(LVDS_CLK:54M). Now, I need to show logo when system start up. But I found a strange problem when I patch the 0001-Enable-uboot-logo-for-HDMI-LCD-and-LVDS.patch to u-boot-2009.08.   The LVDS0_CLK and LVDS1_CLK is about 74M no matter what the DISPLAY_PIX_CLOCK is. 

 

#define DISPLAY_WIDTH1280
#define DISPLAY_HEIGHT1024
#define DISPLAY_BPP32
#define DISPLAY_IF_BPP24// RGB24 interface

 

#define DISPLAY_HSYNC_START248
#define DISPLAY_HSYNC_END48
#define DISPLAY_HSYNC_WIDTH112

 

#define DISPLAY_VSYNC_START38
#define DISPLAY_VSYNC_END1
#define DISPLAY_VSYNC_WIDTH3

 

#define DISPLAY_PIX_CLOCK107964480

#define LVDS_SPLIT_MODE

 

 

kernel, 1280*1024

{
"LDB-SXGA", 60, 1280, 1024, 9260,
248, 48,
38, 1,
112, 3,
0,
FB_VMODE_NONINTERLACED,
FB_MODE_IS_DETAILED,},

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